What Country was the famous pop Group ABBA From?

ABBA is a Swedish pop group that was formed in Stockholm in 1972. The group consisted of Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. ABBA is one of the most successful pop groups of all time, having sold over 380 million albums worldwide. They are best known for their hits "Dancing Queen", "Mamma Mia", and "Waterloo".